Vise for holding circular objects



March 114, 1950 F. J. SERRA VISE FOR HOLDING CIRCULAR OBJECTS Filed July28, 1947 $7tm fNVENTOR. I BY Patented Mar. 14, 1950 A YUNITED STATESPATENT LOFFICE VISE FOR HOLDING CIRCULAR OBJECTS Frank J ohnSerra,Nashwauk, Minn.

Application July 28, 1947, Serial No. 764,122

3 Claims.

This invention relates to a vise and has special reference to such whichare adapted to hold circular objects whereby work may be readilyperformed thereon either by hand, by drill press, or the like.

It is well known that it is almost impossible to hold a circular objectin an ordinary flat-jawed vise while torque is being applied thereto.Thus, it is one of the principal objects of the instant invention toprovide a vise capable of firmly holding a comparatively wide range ofdiameters of circular stock so that torque may be applied theretowithout the objectionable twisting of the stock.

Another object is to provide such a vise in as simple and inexpensive amanner as possible.

Still another object is to provide a vise that will hold a roller from acaterpillar tractor track while work may be performed thereon and whilethe large nuts on the bearings thereof may be adjusted.

Other objects and advantages will appear as the description of theinvention proceeds.

In the drawing forming a part of this application:

Fig. 1 is a perspective view of a vise made in accordance with theinvention.

Fig. 2 is an end elevational view of the swingable end of the clampingbolt.

In the drawing, the reference numeral 1 represents the rectangular baseplate portion of the vise and 2 indicates the angle iron jaw of the visewhich is fixed to the base. The numeral 3 indicates the somewhatL-shaped movable jaw which is made of suitable rectangular bar iron bentat right angles as at 4 and twisted to form a pivotal connection withthe upstanding pilot member 5 which is fixed to the base I.

Pivctally installed at the'opposite end of the movable jaw 3 is theclamping bolt 6 which is threaded at its outer end and provided with anut I. The bolt 6 is selectively engageable within a bifurcation or fork8 in an upstanding member of the fixed jaw 2 for closing the vise.

To provide positive means for holding circular stock, I have installedon each of the jaws of the vice, a pair of triangular'frictional holdingmeans or calks 9, each of which is longitudinally slidably carried onits respective jaw as by a pair of stud bolts l0 through the elongatedopenings H in the jaw which are screw-threaded into the 2 base member ofthe triangular calks. The studs are readily loosened to permit selectiveadjustability of the calks after which they may be clamped tightly inplace again, the pairs of calks bieing normally in spaced opposedrelation to each 0 her.

To facilitate holding circular stock which may have a relatively longshankor axle projecting therefrom, or stock which must be drilled, Ihave provided a relatively large opening l2 in the base I centrallythereof, and a passage or gate l3 from the outer edge of one side of thebase to the opening, thus permitting of the handling of stock which maybe otherwise impossible to hold in a vise.

In order to handle stock or parts which have a flange such as a tractortrack roller and the like,

the lower member of the angle iron fixed jaw may be cut-away arcuatelyas at I4 concentric with the opening 12, this provides a guide for theflange and permits of ready positioning thereof in the vise.

In the operation of the device, the nut 1 is loosened to permit the bolt6 and the movable jaw 3 to be swung outwardly, a pieceof stock isinserted in (or over as the case may be) the opening I2, and the jaw 3is swung inwardly so that,

the calks 9 contact the stock. At this time the calks may be adjusted,if they are not properly positioned to hold the piece of stock,after'which the bolt 6 is swung into the bifurcation 8 in the upstandingmember of the fixed jaw and the clamping nut 1 is tightened to draw thejaws of the vise together, thereby pressing the calks firmly against thestock being held. As pressure or stress is applied to the calks againstthe stock by the continued tightening of the nut I on the bolt 6, thefrictional holding stress is increased in proportion thereto and aftersuflicient stress has been applied, the stock is ready for work to bedone thereon, be it drilling, wrench work, or otherwise.

If desired a handle l5 may be welded to the nut I to facilitate thetightening thereof and assist in applying the leverage necessary totighten the nut sufliciently to apply the necessary stress against thestock being held.

Having thus described my invention, what I claim is:

1. A vise comprising a base; a fixed jaw carposed relation to said fixedjaw; each of said jaws having elongated slots therethrough; a pair ofcalks adjustably carried on each of said jaws by said slots; a clampingbolt carried by one of said jaws and being selectively engageable withthe other of said jaws; an opening through said base positionedcentrally of said calks; and a passage leading from the outer edge ofsaid base to said opening.

2. The structure as set forth in claim 1 and a guide on said fixed jawto align stock held by the vise.

3. A vise for holding circular stock comprising a base; a jawcarried byand upstanding from said base; a movable jaw pivotally carried on saidbase in opposed relation to said first mentioned jaw; each of said jawshaving elongated slots therethrough; a pair of calks adjustably carriedby said slots on each of said jaws in spaced op- 4 posed relation toeach other; and pivotal means for clamping said jaws toward each other;said base having an opening therethrough positioned centrally of saidcalks and a passage leading from said opening to the outer edge of saidbase.

FRANK JOHN SERRA.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 371,805 Yanderman Oct. 18, 1887 I964,978 Lee-- fj -1 .".s. July 19, 1910 1,137,693 Baxter Apr. 27, 19151,349,632 Staley Aug. 17, 1920 1,921,281 Carlson Aug. 8, 1933 1,992,322Nulf et a1 Feb. 26, 1935 2,330,201 Boynton Sept. 28, 1943 2,417,457

De Moore Mar. 18, 1947

